Drunken Forest is a cave in Mulu NP that was discovered in 1984, on the early exploration expeditions led by the British. There is something unusual about Drunken Forest as you can see from this photograph. In certain parts of the cave, the stalagmites lean and on first impressions look to have formed at an angle. However, that is not the case and it is thought that during an earthquake many years ago that tilted the stalagmites.